冷軋帶肋鋼筋(1 200MPa)粘結(jié)錨固性能試驗研究
李佩勛 謝應鵬 趙瑜
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李佩勛 謝應鵬 趙瑜
(冶金部建筑研究總院 北京 100088)[提要] 通過拉拔試驗，探討了冷軋帶肋鋼筋(1 200MPa)破壞機理c-s曲線模式，確定了冷軋帶肋鋼筋(1 200MPa)粘結(jié)強度與砼強度、保護層厚度、錨固長度等主要因素的關系，并由試驗結(jié)果推導出了臨界錨固長度，為該級別冷軋帶肋鋼筋的工程應用提供了可靠的依據(jù)。
[關鍵詞] 冷軋帶肋鋼筋 粘結(jié)錨固 臨界錨固長度The conditions of anchorage intensely affect bond-anchorage properties of Cold-Rolled Ribbed Wires and bars in concrete. The effects of concrete strength, thickness of concrete cover, anchorage length for bond-anchorage properties have been investigated on the basis of a lot of pull-out test. By way of experimental statistical regression, the critical anchorage length of the wires and bars has been proposed.
Keywords: cold-rolled ribbed wires and bars; bond-anchorage; the critical anchorage length
